Abstract
Chubu Electric Power Co., Inc. & Kobe Steel Ltd. has developed UHE (Ultra-High Efficiency) screw chiller which has 40∿50% better COP than conventional screw chillers thanks to the combination of many epoch-making new technologies including Lorentz cycle with non-azeotropic refrigerant (R407), liquid subcooling systems, high efficiency semi-hermetic screw compressor employing Kobe's own "Super Rotor" and more. UHE is also environmental friendly by using HFC refrigerant which Zero ozone-depletion potential and is lowest TEWI (Total Equivalent Warming Impact) in all type chillers. UHE's TEWI is as low as 60∿70% of conventional chillers or 25∿30% of gas absorption type chiller
